Setting Timing

[Gaz64]

Originally Posted by Large Arbor

I talked with the engine builder and he stated that the likelihood is it was not seated properly initially and bent gradually which would explain why it did not create a ruckus initially and lasted a while. I think I will replace the pushrods and make sure they all are seated and hold on the replacements. He indicated he had never seen a standard Ford FE rocker come apart and NASCAR runs this similar approach with non-adjustables.

Phil

That's a load of rubbish, either it was seated (fitted correctly), or it wasn't.

That does NOT happen gradually, that is a sudden catastrophic failure.

And if you don't find the cause, the next pushrod will also jump out.

For 1 out 16 to do that, I would still be looking at everything to do with how that valve operates. And during that, you may find more things wrong.